Lincoln Electric IDEALARC CV-300 Service Manual page 44

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TROUBLESHOOTING GUIDE - Observe all Safety Guidelines detailed throughout this manual
PROBLEMS
(SYMPTOMS)
Machine has high output and no
control.
Machine does not have maximum
output.
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, con-
tact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed call
216-383-2531 or 1-888-935-3877
TROUBLESHOOTING & REPAIR
POSSIBLE AREAS OF
MISADJUSTMENTS(S)
OUTPUT PROBLEMS
1. Place the remote switch in
machine control. If normal out-
put is restored then the remote
control unit may be faulty.
Check or replace.
2. Turn off the machine. Wait one
minute. If the problem is
resolved when restarted, switch
positions of any two of the input
lines.
1. Place the remote switch in
machine control. If normal out-
put is restored then the remote
control unit may be faulty.
Check or replace.
2. The input voltage may be "dip-
ping" when the machine is
under load. Check.
3. Make sure all three input phas-
es are applied to the machine.
CAUTION
IDEALARC CV-300
RECOMMENDED
COURSE OF ACTION
1. Perform the Main Transformer
Test.
2. Perform the Output Rectifier
Bridge Test.
3. Check the output control (R2)
and associated leads.
4. The control board may be
faulty. Replace.
1. Check the output control (R2)
and associated leads.
2. Perform the Main Transformer
Test.
3. Perform the Output Rectifier
Bridge Test.
4. The control board may be
faulty. Replace.
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